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Non-logarithmic magnetic relaxation in PbMo6S8

โœ Scribed by P. Norling; K. Niskanen; P. Nordblad; P. Svedlindh; L. Lundgren; C. Rossel; M. Sergent; R. Chevrel; M. Potel

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
365 KB
Volume
165-166
Category
Article
ISSN
0921-4526

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โœฆ Synopsis

The time dependence of the zero-field-cooled magnetization of the extreme type-II superconductor PbM0 6 Sa has been measured at temperatures 0.7:s;TfT~0.95 and for fields 1G:s;H::;;300G. The results show that the decay changes from a logarithmic to a non-logarithmic form as the field is increased, indicating that the conventional flux creep model is not sufficient to describe the phenomena.

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## results We have measured eight samples of sputtered PbMo6Ss. Here we only present results for the 'cleanest' sample, and results that have not been presented before, s Measurements were made in a 14 T superconducting solenoid, and in a 19 T water cooled magnet. The critical current density was